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Anyone who's good in math! HELP!

If (x-4)^4 =49 and x>0, what is the value of x^2?-(x-4) = sqrt(sqrt(49)) = sqrt(7) => x = 4+sqrt(7) => x² = 16+8sqrt(7)+7 = 23+8sqrt(7) is one solution x = 4-sqrt(7)is another solution => x² = 23-8sqr

Help Please!!! How do you figure out if something is an ISOSCELES TRAPEZOID

Pre-calc/Geometry Problem Help? please :) Isosceles Trapezoid...? Do the vertices/points ( - 4 , - 5 ) , ( - 3 , 0 ) , ( 0 , 2 ) and ( 5 , 1 ) make an isosceles trapezoid? Okay well Ive tried asking

Geometry Question -- Paper Folding Trick

Given a piece of square paper, fold it twice, and then cutting across all thickness, create a square in the middle of the larger square. How can this be accomplished? I simply cannot figure it out.-I

How to solve x³=y-2³ , y=√81

y =√81 y = 9 substitute y = 9 into x^3 = y – 2^3 x^3 = 9 – 8 x^3 = 1 x = 3√1 x = 1 Therefore y = 9 and x = 1-x³=y-2³ y=√81................thus y=9 substitute into the first equation x^3=9-2^3 x^3

Wats tha difference between prime an composite #

A prime number has exactly two factors, namely the number itself and one. For example 13 is a prime number because its factors are 1 and 13. It is not divisible by anything else. 29 is also a prime nu

(Roulette) What is the probability that 'black' will not be landed on 9 consecutive times

Keeping in mind that there are more than black and red on the board... Im working on a strategy. Who want in? lol-There are 18 red, 18 black, and 2 green on a roulette wheel. So the probability of a

Simple math questions

1) What is a real number that is not rational? 2) Which two whole numbers are neither prime nor composite? 3) Explain why 1/4 and 1.4 are not equivalent expressions.-1. A real number that is not ratio

Statistics Question please help.

I am given this list of Y-values: 7,3,8,10. My ultimate goal is to find the standard error of estimate. In order to do so, I need to find y hat-- it is a y with ^ this on top. I dont know how to type

Algebra help please! correct answers and ill give Best Answer to Better answer

help me please!?!?! 4.) which of the following expressions when evaluated yields a true statement?a.) 14 - 2m ≤ 8+3m when m=1b.) 5x-1 > 3x+7 when x= 5 c.) 5x- x/3 ≥ 0 when x= -3d.) 2x-1 = 4x+9x = -4

Help in Pre Algebra

Evaluate 2 [5 (4 x 6) - 3] 8 + 2 x 9²=-Alright so they brackets mean everything in them has to be done first before you can multiply by 2. In addition, everything in the parenthesis has to be done

Statistics : FInd a mean, median, mode, variance

A set of data is given by 11 23 45 42 39 56 51 17 22 29 46 33 38 33 31 29 22 26 27 26 26 51 47 25 26 FInd a mean, median, mode, variance with detailed steps please i will surely rate you-Mean

Math geometry questions 10 points!!!

1.if two angles are linear pairs of angles, than they are ________ 2. if two angles are equal in measure and ________, then each angle measures 90 degrees 3. A quadrilateral with exactly one pair of p

Is this correct to use this formula to solve this trigonometry question

Q: Find sin theta given cos theta= 2/5 and sin theta A: I used this formula: X^2+ 2^2= 5^2 X^2= 25-4 x= sqrt 21 so sin theta is sqrt21/5 Are these steps correct ? If not could you please solve

If the average of 3 and x is 5, and the average of 5 and y is 7, what is the average of x and y

Can someone please explain this problem step by step to me. Please and Thank You!-Average is the sum of numbers divided by the number count. (3 + x)/2 = 5 3 + x = 10 x = 7 (5 + y)/2 = 7 5 + y = 14 y

Calculus problem particle motion in a plane

So I have a problem with the position of a particle in a plane: X(t) = tI + ln(cos(t))J .. @ t = (-.6pi)/2 I am supposed to find the unit tangent vector, the unit normal vector, the acceleration vec
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